study. The following is my ways to e the difficulties. I have difficulty in pronunciation. So every morning, I read a passage aloud for half anhour to try to pronounce every word correctly with a recorder. And then I will spend half anhour listening to English radio programs on VOA to improve my listening ability. Since I also have trouble in English grammar, I attend an English class to study grammar. The teacher who teaches English grammar mended me tobuy a grammar book — Concise English Grammar . It isa great help to me. These are what I have done to e the difficulties in my English study. 训练 31 你的朋友邀请你参加他/ 她的生日聚会, 告诉对方你不能接受他/ 她的邀请。应包括下列内容: 1. 告诉对方你不能接受他/ 她的邀请。 2. 感谢对方的邀请。 3. 说明无法接受邀请的原因。 Dear Lisa, C ongratulations to ing birthday. Thanks for your invitation , but I am sorry that I am